Propelling magazine pencil



July 18, 1950 v. VOTRUBA PROPELLING MAGAZINE PENCIL Filed Oct. 25, 1946 m 3w m 1 Z .1 J kB Patented July 18, 1950 UNITED- PATENT OFFICE PROPELLINGJMAGAZINEPENCILi 'Viijtch "Vlitrub'a, Gske Bu'dejovice, Czechoslovakia assignorito 'Koh-I-"Noor Pencil Factory L. & 'Htrcltmutlii Ceske Budejovi'ce; C'zechoslovaliia; a-- company of Cz'ecli'oslovakia I Application 'Qctober 25, 1946, Serial No. 105,722

Thisjnvention relates to apencil'otthe type in which four different coloured leads are *con tainedliinr a casing, withinth'e'" pencil" housing-and aremadaptjed tobel selectively "broughtto the writ ing,p,ositi0n, v

'Accordin'g to this" invention, a magazine pen ciliiiiicludes a guide sleeve'which is closedat' as: lower .endib'i' an abutment"disciorm'ed' with" bevelledeprojection; andiour. lead barrelsm metricall v disposed within" said" sleeve when the penciLparts are in apbsition ofrest.

In the-accompanying drawing:

, Fig; 1'; is a ,Icngiwdmar sectionpf a" magazine pencilaccqrdin to the'invention; I

E'ig. ,5v is. a perspective viewof' the' lead select inganeans hi the pencil; and.

filis aiperspectiveview'of the casinghold' ingsthel'ead barrels and forming partof the pen-"- cil shown in 1.1. l

L Referring, to Fig. 1, a; magazine pencil com prises-J. at housing l containinga. casing Zin which are-fitted! four barrels teach adapted to re; ceive a coloured l'eadf. The" magazine-basing 3{ fits into a guide sleeve 5, whichis inserted thepencilihousing I; the upperendofsaid sleeve beingsrigidly fixed'inthe housing I bymeansot ajthreaded'ring 6T Theaf ourl .leadlbarrels 4 enclosed in the mag azin'e casingtii areeach closedatth'e upper end" by aeplugl l I, each plugbeingconnected by means ofvayspring-i-llto anpress knob orbutton I3. By thismeans, the barrels. Ncanbedeflected' at their lower ends as hereinafter described and" this is The press button I 311s fixedon the magazine casing"3' and-is provided around its periphery" withfour coloured" marks which indicate' the colors'of the respective leads in the barrels: The" lower end"'of"the button l3 isflang'edat H, said flange beingadapted toabut against aninternal fiangeon the'top l8" of the pencil'housing I; whereby the casing 3 cannotbe forced out time housing l.

The l'eadtselecting" mechanismyof the" new magazinepencil described above consists of -th'e' annular closure disc 8 which is" arranged"with'ir'rv the sleeve 5 at the lower end thereof firmly se-- cured totheisl'eeve1and provided with an up-- wardlyextendingprojection 8"; This projection 8 forms; asfclearly shownin Fig. 1', an inwardly inclined abutment at'its upper end'against which' the free end "of theselected lead barrel'df abuts and"is guided into leadchanging-position as will; be'des'cribed farther-along in detail;

morder to avoid unwanted-falling out" ofthe leads 'fr'om'the'lead barrels' l and to return the leadbarrels' together with the button l3 from lead changing into inoperative position, there is provided withinithe'sleeve 5a discj shaped' bottom" rnember"l 'cle'a'rlyshown inFi'gure 51 This disc-shaped" bottom member 'I" is provided with" an"annular extension "1 fitting -intb -the open- V ing'in'jthe annular closure disc "8- so as*- to supleads. The 'casing 3' has four parallel inwardly directed-indentations l4 extendinglongitudinally ofrandasorformed on said casing 3 that there is a leaduibarrel 4 between each prair of".indentations'; (see-iwFigs-i 3);. Two oppositely disposedi projectimisiv l 5 on, "the inner. wall of l the. guide. sleeve (FigseZandrfi): are adapted to engagethe indentationsr It: The sleeve; 5 isalso provided with fourilongitudinal cuts Zlarranged in pairs on op.- positez sides of thesleeve, ,each pair arranged on opposite sides of onenofthe -projections. l5 (seea- Fig; 6).; .The: slots ;22 and projections I51 toetherrexert' akind of spring action whenthe. latter haveaen'gaged the indentations ilk-form? inglia safety device acting. to a certain extent against; any: rotation of the press button. l3."

tensibn'l' are providedwiththe 'hole'Zilthrquiglrr which the lead'from, arr-inwardlydeflectedlead i barrel isable' to drop'intythe extensicn sleeved} Wiii in -thetworprojections 15 on the sleeve 5 ear-4 actl y zengage two indentations l 4 in--the casing 3; the pencil is in the writing position.

port the bottom member '1' freely slidabl'y in ax ial direction ofthe" pencil; The bottom member 'Ias well as the annular extension I are pro vided 'witha groovetl" corresponding to the upw ardly'extendingprojection' 8 of the" annular closureidisc 8 soas to enable freesliding o'f t he" bottom member 1 between its lead changing p'o siti'on' shown Figure- 1 and its inoperative po sition; notshown in the drawing; in which the uppenface of the bottom member! located'in:- the" plane of the: inclinedebutmenfiat tlueupper end of theprojectiontp 1 The annular -'extension 'l" 'of *the bottom"mem'- berl' is'firmly' securedto the extension sleeve'ilof the'clamping tube 10 for-the selected lead, as"; shown in Figure 11 This clamping tube '10 isl: freely slidable in the metal point jzl whichin turnxis' rigidly secured to the pencil' housing. 1. Bcththe bottom member 'lTandtheannular" e andthej clamping tube"! '6'.

,Spring 9 1 arranged as'shown" ifrr Figure l abuts against" an annular diso secured to the extensio n I sleeve 9 "and" permanently -'tends*- w move this sleeve together with the clamping tube in and the annular extension 1' and bottom member I upward into inoperative position in which the clamping tube I is located in a corresponding recess in point 2| and the upper face of the bottom member 1 is located in the plane ,of the inclined abutment at the upper end of the projecion 8'.

It should be stressed, however, that, as clearly point 2| is shaped so that the clamping member is able to enter the recess only if it is slightly compressed. Consequently, if a lead is located in the clamping member l0 held by the same, spring I9 is unable to slide the extension 9 together with the clamping member I 0 and the bottom member 1 into inoperative position in which all four lead barrels 4 are in parallel inoperative position.

The new magazine pencil described above operates as follows:

If there is no lead in the clamping member I 0, springv l9 moves the same together with extension sleeve 9 and bottom member 1 into inoperative position not shown in the drawing, in which position, as set forth above, the upper face of the bottom member I is located in the plane of the inclined abutment at the upper end of the projection 8. In such inoperative position, all four lead barrels 4 are held by the springs [2 in parallel outwardly disposed position closed at their lower ends by the upper face of the bottom member l and the abutment at the upper end of extension 8.

If it is desired to select a certain color, the button i3 is turned until the selected lead barrel 4 is located above the extension 8. Next, the button I3 is pressed in downward direction. This will result in sliding of the selected lead barrel along the inclined abutment of projection 8 into the lead changing position shown in Figure 1,

In this writing position, as explained above, the

clamping member as well as the bottom member I have not yet reached their inoperative position so that the selected lead barrel 4 will still be deflected inwardly cooperating with the opening in the bottom member 1 and preventing unintentional turning of button I3. I

If it is desired to change to another color, the pencil is turned upside down and the button l3 depressed, permitting the lead from the clamping member iii to drop back into the proper lead barrel. Then, the button I3 is released and another desired lead selected as described above.

What I claim is:

1. A magazine pencil comprising in combination a casing; a channel at the forward endof said casing; an internal chamber lengthwise in said casing; a plurality of lead holders disposed symmetrically within said chamber; a closure disc disposed in said chamber at its forward end; an opening formed centrally in said closure disc providing a communication between said chamber and said channel; an.

provided 4 abutment arranged on said closure disc, the said abutment having a face sloping toward the said central opening; actuating means disposed at the rear end of said casing and being revolvable in relation thereto and being movable inwards; and a connection between said actuating means and the rear end of each of said lead holders for bringing a selected lead holder into contact with said abutment and then urging the said lead holders inward and thus moving the selected holder along said abutment to bring its inner end in alignment with said opening whereby a lead may be dropped from said holder through said opening and channel.

2. A magazine pencil comprising in combination a casing; a channel at the forward end of said casing; an internal chamber provided lengthwise in said casing; a plurality of lead holders disposed symmetrically within said chamber; a

closure disc disposed in said chamber at its forward end; an opening formed centrally in said closure disc providing a communication between i said chamber and said channel; an abutment ar ranged on said closure disc, the said abutment having a face sloping toward the said central opening; actuating means disposed at the rear end of said casing and being revolvable in relation thereto and being movable inward; and individuy al spring members connecting the rear end of each of said lead holders with said actuating means for bringing a selected lead holder into contact with said abutment and then urging the said lead holders inward and thus moving the selected holder along said abutment to bring its inner end in alignment with said opening whereby a lead may be dropped from said holder through said opening and channel.

3. A magazine pencil constructed in accordance with claim 1 including clamping means disposed in said channel; spring means for urging said clamping means inside said channel; and a thrust member being connected at one end to said actuating means and acting with its other end on said clamping means so as to force F the same outside of said channel, thus releasing the lead disposed in said channel.

4. A magazine pencil comprising in combination a casing; a channel at the forward end of said casing; an internal chamber provided lengthwise in said casing; a plurality of lead holders disposed symmetrically within said chamber; a closure disc disposed in said chamber at its forward end; an opening formed centrally in saidclosure disc providing a communication between said chamber and said channel; an abutment arranged on said closure disc, the said abutment having a face sloping toward the said central opening; actuating means disposed at the rear end of said casing and being revolvable in relation thereto and being movable inward; a guide sleeve disposed in said casing and surrounding said lead holders, the said guide sleeve being connected to 1 said actuating means; and a connection betweensaid actuating means and the rear end of each of said lead holders for bringing a selected lead holder into contact with said abutment and then. urging the said lead holders inward and thus moving the selected holder along said abutment to bring its inner end in alignment with said open-- ing whereby a lead may be dropped from said holder through said opening and channel.

5. A magazine pencil comprising in combina-.' tion a casing; a channel at the forward end of said casing; an internal chamber provided length-, wise in said casing; a plurality of lead holders disposed symmetrically within said chamber; a closure disc disposed on said chamber at its forward end; an opening formed centrally in said closure disc providing a communication between said chamber and said channel; an abutment arranged on said closure disc, the said abutment having a face sloping toward the said central opening; actuating means disposed at the rear end of said casing and being revolvable in relation thereto and being movable inward; a guide sleeve disposed in said casing and surrounding said lead holders, the said guide sleeve being connected to said actuating means; clamping means disposed in said channel; spring means for urging said clamping means inside said channel; an operative connection between said guide sleeve and said clamping means whereby said clamping means are forced outside said channel upon inward movement of said actuating; means; and a resilient connection between said actuating means and the rear end of each of said lead holders for bringing a selected lead holder into contact with said abutment and then urging the said lead hold- REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS= Name Date Rice et a1 Jan. 9, 1900 Number 

